(19)

(11)

EP 3 837 489 A1

(12)

(43) Date of publication: 23.06.2021 Bulletin 2021/25 (21) Application number: 19779984.4 (22) Date of filing: 19.08.2019

(51) International Patent Classification (IPC):  F42B 3/26(2006.01) F42D 1/22(2006.01) (86) International application number: PCT/IB2019/056987 (87) International publication number: WO 2020/039332 (27.02.2020 Gazette 2020/09)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 18.08.2018 GB 201813483 (71) Applicant: McKernan, Michael Dunboyne, A86 W449 (IE)	(72) Inventor: McKernan, Michael Dunboyne, A86 W449 (IE)